1 v
2 b
vse :)...........................................
1) 2Mg + O2 → 2MgO
2) MgO + 2NaCl → MgCl2 + Na2O
<span><span>MgCl2</span> + <span>2<span>KOH</span></span> → <span>Mg<span>(OH)</span>2</span> + <span>2<span>K<span>Cl
3) </span></span></span></span><span><span>Mg<span>(OH)</span>2</span> + <span>2<span>HCl</span></span> → <span>MgCl2</span> + <span>2<span>H2<span>O
4) </span></span></span></span><span><span>MgCl2</span> + <span>Zn<span>(NO3)</span>2</span> → <span>ZnCl2</span> + <span>Mg<span>(NO3)</span><span>2</span></span></span>
<span>Гидрофосфат натрия))))))</span>
C3H6+H2O=C3H7OH;кол-ва вещ-ва пропена=10.5:42==0.25моль
70 г Х кДж
2H2 + O2 = 2H2O + 570 кДж
n=1 моль
М = 32 г/моль
m=32 г
70 г О2 - Х кДж
32 г О2 - 570 кДж
Q = 70 * 570/32 =1247 кДж